Average annual temperature is 13.9 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: -15.3 °C
Number of sunny days: 195 days
Number of rainy days: 164 days
Number of snow days: 6 days
Look at detailed online map of Yŏndam
* Weather data for Yŏndam South Korea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.0 | 15.0 | 22.0 | 26.1 | 31.7 | 32.3 | 33.7 | 35.1 | 30.2 | 23.1 | 25.2 | 17.1 |
| Average daytime temperature (°C) | 4.7 | 7.4 | 14.8 | 17.2 | 22.2 | 26.2 | 29.6 | 29.2 | 24.8 | 19.6 | 12.7 | 6.3 |
| Average temperature (°C) | 0.5 | 3.1 | 9.9 | 12.7 | 18.1 | 22.3 | 26.1 | 26.0 | 21.7 | 15.0 | 8.2 | 2.4 |
| Average night temperature (°C) | -2.8 | -0.2 | 5.8 | 8.7 | 14.6 | 19.0 | 23.5 | 23.4 | 19.1 | 11.1 | 4.2 | -0.7 |
| Absolute minimum temperature (°C) | -15.3 | -4.1 | -3.5 | 2.7 | 8.6 | 14.8 | 19.5 | 20.5 | 14.8 | 5.9 | -6.5 | -11.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.2 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.7 | 9.0 | 9.0 | 9.0 | 10.1 | 8.3 | 9.4 | 7.4 | 8.7 | 7.8 | 7.1 |
| Precipitation (mm) | 38 | 41 | 52 | 73 | 148 | 177 | 335 | 322 | 280 | 16 | 39 | 163 |
| Sunny days | 24 | 19 | 23 | 15 | 18 | 9 | 8 | 6 | 8 | 20 | 21 | 24 |
| Rainy days | 5 | 6 | 8 | 15 | 13 | 21 | 23 | 25 | 22 | 11 | 8 | 7 |
| Snow days | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The largest precipitation sum in Yŏndam is at